infancy

/ˈɪnfənsi/
noun
  1. The very early period of a baby's life, from birth to about one year old.
    • The vaccine is given in early infancy to protect against serious diseases.
    • During infancy, babies need a lot of sleep and frequent feedings.
    • Her son had several ear infections during his infancy.
  2. The early stage of development of something, such as an idea, technology, or organization.
    • The company was in its infancy and had only three employees.
    • The field of artificial intelligence is in its infancy compared to other sciences.
    • The internet was still in its infancy when I first started using it.
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